Spraying composition.



ALEXANDER nniviaen, or serrate, ew rosin, ASSIGNOR re a sages-in coLoE & CHEMICAL coivirajnv, moonroaacrsn, or DETROIT, MICHIGAN, a consenarion or new roan.

icense.

No Drawing.

To all whom it may concern:

Be it known that LALEXANDER S. RAMAGE, a subject of the King of GreatBritain, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Spraying Compositions, of Which the following is a specification.

This invention relates to spraying compositions for foliage, the object of the invention being to provide a spraying compos1- tion which when dry will become practically waterproof or at least unaffected by rain, with the result that the interval between sprayings may be greatly increased and the number of sprayings correspondingly diminished.

The invention will be described by reference to a preferred embodiment thereof,it being understood that it is not limited to the specific materials or proportions hereinafter mentioned as illustrative.

Example: Arsenate of lead, produced in any usual or desired way, is suspended in water, and there is added about ten per cent. by weight, calculated upon the dry arsenate, of a soluble soap, preferably a tallow soap.

if then add a dissolved salt of lead, preferably lead acetate or nitrate, in. proportion to pre cipitate the soap in the form of an insoluble lead compound or soap, distributed through and over the arsenate. llhis operation may be carried out at ordinary temperatures, and the resulting composition may be used at once in the form of a Water suspension; or it may be converted into a paste for storage or shipment and i e-suspended in Water for use.

it is found in practice that a spraying composition prepared as above possesses excellent adhering and Weathering qualities, has no corrosive effect upon the foliage, is

highly effective as an insecticide, and requires only about one-half of the usual number of sprayings to insure protection. The sodium nitrate which is formed coincidently with the precipitation of the metal soap possesses a certain fertilizing value in so far as it may ultimately reach the plant roots, and is advantageously conserved in the suspension or paste.

Spraying compositions containing Paris green may be similarly prepared, the soap solution being added to the Paris green Specification of Letters Patent.

s'rnnvrne ooitrosi'rron.

Other spraying compositions, as for eX-- ample, Bordeaux mixture or similar mixtures, may be treated in like manner. The

insoluble soap precipitated upon the substancewhich forms the base of the spraying Patented tree. 28, rain. Application filed April 16, 1915. Serial No. 21,871. V

composition may be a soap of the same metal I which enters into this composition, or of another metal, as may be desired, the essential feature of the invention being the precipitation, upon the insecticide substance and coating the particles thereof, of a soap which is insoluble in Water and will serve to impart the properties above described.

Any of the above compositions containing the requisite proportion of an insoluble metallic soap may be applied to the foliage in the form of a dry or substantially dry powder by a process of blowing. The com positions prepared in accordance with this invention are very advantageously and economically used in-this manner, being light and fluffy in character and hence easily carried and distributed by blowing, and-at the same time adhering Well to the foliage. Furthermore, they are strongly water-repellent owing to their soap-content, and hence are not easily washed off even when they have been applied in powder form. These advantages are particularly stronglymarked in the case of Paris green.

A. further advantage possessed by the arsenic-containing products prepared in accordance with this invention is that owing to the insolubility of the metallic soap which coats the individual particles, as Well as its Water-repellent character, any tendency of the arsenic to pass into solution in Water is overcome, or very greatly diminished, thereby lessening or entirely avoiding the corresive effect upon the foliage.

1. A Water-repellent insecticide composition comprising a solid substance having insectieidal properties and an insoluble metallic soap coating the particles thereof.

2. A Water-repellent insecticide composition comprising a substantially insoluble particles of said salt coated with an insolumetallic salt having insecticidal properties, ble soap of the same metal.

and an insoluble metallic soap coating the 4. A water-repellent insecticide composi- 10 particles thereof. tion comprising lead arsenate, the particles 3. A water-repellent insecticide composithereof'coated with a lead soap.

tion comprising a substantially insoluble me- In testimony whereof I aflix my signature.

tallic salt having insecticidal properties, the ALEXANDER S. RAMAGE. 

